Billie Jean Technology
THE SIREN SERIES
Jerry Harvey Audio has developed a whole new Balanced Armature Driver to offer reference quality IEMs for mastering and mixing works. The high-range drivers are designed to deliver everything with minimum distortion, while the ultimate mid driver offers perfect, flat sound from 10Hz to 5kHz.
The bass driver was designed for an even steeper low-pass effect with no distortion.
Freqphase™ Time | Phase Waveguide
Most Multiple Driver IEM's suffer from phase and timing issues. Low, Mid, and High drivers all have different impulse times. The higher it is, the faster the impulse time of the BA Driver. The lower it is, the slower the response speed. This causes improper arrival times and Phase shifts.
The "Billie Jean" applies Jerry Harvey Audio's patented "Freqphase" technology, which uses precisely cut tube lengths for each driver to minimize the phase shift of each frequency. This allows for the High, Mid, and Low drivers to be aligned to 1/100ms for the most ideal phase curve. It ensures the correct time alignment and phase of all drivers resulting the most accurate music reproduction in the industry.
2-Way 2-BA Drivers
The Balanced Armature drivers used in Billie Jean are a customized BA only available from Jerry Harvey Audio and is designed to bring more power with less weight. Billie Jean will surprise you with efficient, yet powerful sound.
Jerry Harvey Audio's Freqphase™, Timephase, and Waveguide technologies allow this 2-Way 2-BA IEM to deliver the full range of audio performance anytime. The special Acoustic Chamber Sound Bore design has been carefully crafted to bring a wide soundstage with incomparable dynamic range, without adding any interference.
We highly recommend you try Billie Jean with your favorite tunes, which will never sound the same again.
Shaped for a Precise Fit
Billie Jean is over 30% smaller compared to Michelle Limited.
Its design has been optimized after a series of studies of different shapes of ear canals from both men and women of different ages.
It fits and sits perfectly in your ears without bulkiness.
The Universal Fit Billie Jean is the perfect companion for Pro Audio applications such as sound monitoring. With the noise isolation design and the IEM know-how from Jerry Harvey Audio, you will get the best fit and comfort while you enjoy your tunes in a new way.
Silver Tinsel Cable with detachable 2pin connector
The cable used in the Billie Jean is not common copper. Instead, it is a copper cable plated with silver.
The cable is manufactured by first compressing the silver plated copper wire, which is then flattened and rolled into a steady interval that is then used to wrap around the Kevlar(or Zxoin & Technora). This newly developed cable has astounding tensile strength and delivers the full dynamic range of music. Kevlar fiber is used for 3.5mm unbalanced bundle cable and Zxoin and Technora fiber for 2.5mm balanced cable. (2.5mm Balanced cable is included only with Billie Jean Purple model)
Conventional straight cables do not handle the frequent bending of cables and often short out. The intertwined cable disperses the stress to the cable and offers better resilience. It's also easier to wear around the outer ears as the cable shape can be easily adjusted for the best fit.
The brand name of Aramid fiber that DuPont USA manufactured.
It is very lightweight and more durable than nylon, and has the advantage of being very tough. Because it is made of light weight organic polymers such as carbon, nitrogen and hydrogen, allowing it to be 5 times more stronger than steel. Kevlar is particularly strong against friction and is commonly used for body armor and aircraft tires due to its excellent shock absorption.
Zxoin & Technora
Zxion, a patented technology from VICTOR in Japan, is a polyester-crystalline fiber that can transmit signals more reliable.
Technora is a para-aramid fiber autonomously developed by Teijin in Japan. It has a tensile strength about 8 times higher than steel of the same weight and mainly used for parachute.
Astell&Kern Billie Jean